* {
    margin: 0;
    padding: 0;
    list-style-type: none;
    touch-action: none;
    user-select: none;
}
 
.bg {
    position: absolute;
    z-index: 0;
    width: 100vw;
    height: 100vh;
    background: url(../img/banner-3.jpg);
    background-size: cover;
    transform: scale(1.1);
}
 
canvas {
    position: relative;
    z-index: 1;
}
 
.header {
    position: fixed;
    z-index: 3;
    top: 0;
    left: 0;
    display: flex;
    justify-content: space-between;
    margin: 20px;
    padding: 13px 20px;
    font-size: 15px;
    font-family: Lato, Arial;
    color: #333;
    box-sizing: border-box;
    box-shadow: 0 2px 3px rgba(0, 0, 0, .1);
    background: rgba(255, 255, 255, .8);
    border-radius: 30px;
    width: calc(100% - 40px);
    text-transform: uppercase;
    &.game-over {
        color: transparent;
        background: black;
        &:before {
            content: "GAME OVER!";
            color: #fff;
            text-align: center;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }
    }
}